Auxiliary air-feed for carbureters.



T. Nl. BILLS & T. H. HARVEY.

AUXILlARY AIR FEED FOR CARBURETERS.

APPLICATION FILED MAY9.191s.

1,202,263. Patented oct. 24,1916.

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THOMAS M.BILLS AND THOMASH. HARVEY, 0F FGRT WORTH, TEXAS.

AUXILIARY AIR-FEED IEOIR. CARBURETES. I

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Specicatioii of Letters Patent.

Patented oet. 2a, raie.

.Application filed May 9, 1916. Serial No. 96,290.

' provementsin Auxiliary Air-Feeds for Carbureters, of which the following is a specification. l L g Our invention relates to improvements in auxiliary air feed for carbureters, and theJ object is to provide a simple and inexpensive check valve for the operation of gasolene engines, which will cause complete combustion by providing suiicient oxygen to explode all the particles of hydrocarbon elements, which willeffect a considerable increase in power, and .by which a considerable saving in fuel or gasolene is effected.

@ne of the advantages is that gradually increased quantities of air are furnished as the speed of the motor increases.

Other objects and advantages will be fully explained in the following description, and

the invention will be more f particularly pointed out in the claims.

Reference is had to the accompanyingv drawings which forma part of this application.

Figure 1 is a plan view of a plug containing the improved valve. Fig. 2 is a longitudinal section, taken on the line mof Fig. 1.

Similar characters of reference are used to indicate the same parts throughout the several views.

^ small ducts 13, 14, and 15 respectively gradually increasing in size for letting in air. Valves 16 are used to close the ducts 13, 14, and'15 when the ducts are not taking air. The valves are held lagainst the plugs by springs 17, 18, and 19, the spring 18 being larger than spring 17 and spring 19 being larger than spring 18. 1 The inner ends of the plugs 10, 11, `and 12 are cup-,shaped to receive the balls 16. The plugs 10, 11, and 12 are locked in position by lock-nuts 20 and these plugs may be used to regulate the tension of the springs 17, 18, fand 19.

The operation is as follows As soon as a vacuum is created in the passages 4 as will be true when a greater quantity of air is required, the weakest spring 17 will let the valve 16 open the smallest duct 13 so that 'air will come in, and as more air or other fluid is required, the next stronger 'spring 18 will let the valve 16 open the next larger duct 14, and as the demand increases, the largest or strongest spring 19 will llet the ball 16open the 'duct 15 for air to come in for supplying the increased demand for air. Thus any vacuum in the ducts 4 will tend to cause the pressure froml the atmosphere to overcome the tension of the springs 17, 18, and 19. There will thus be a plurality of valves, opening successively to supply the increased requirement of air.

What we claim, is,-

1. An auxiliary air feed for carbureters comprising a plug, said plug having a plurality o-f longitudinal ducts therein and angular ducts leading from the longitudinal -ducts to a common duct in said plug, air duct plugs screwed into saidy longitudinal ducts, valves for closing said air duct plugs, and a plurality of springs of dierent tension for controlling the movement of said valves.

2. An auxiliary airfeed for carbureters v comprising a plug, said plug having a central duct and a plurality of longitudinal ducts connected to said central duct by angular ducts, plugs screwed into said longitudinal ducts and having graduated air ducts therethroughleading from the'atmosphere to said longitudinal ducts, springs ,in

said llongitudinal ducts graduated kin size and tension, and valves adapted to close the Vduets through said plugs and held in place by said springs but movable as said springs yield.

3. An auxiliary air feed for carbureters comprising a head or plug, said head having a central duct and a plurality of longitudinal ducts connected to said central duct by angular ducts, plugs screwed into said longitudinal ducts and having graduated air ducts therethrough leading from the atmosphere to said longitudinal ducts and having their inner ends cup-shaped, springs in said longitudinal ducts graduated in size and teniivo sion according to the openings through said plugs, the Weakest spring being in line with the smallest duct, and Valves in Said longitudinal ducts adapted to engage the cupshaped ends of said plugs to close said openings, but movable as said springs yield to open said plugs, each plug being opened successively commencing with the plug having the smallest opening.

In testimony whereof, We set our hands this 6th day of May, 1916.

THoMAS M. BILLS. THOMAS H., HARVEY. 

